To claim his inheritance, John Strong travels to Thursday Island with an ultimatum to locate a valuable pearl within two years. If he fails, his late uncle's pearling station will be forfeited to a rival pearler, "Black" Darley.
| Actor | Role |
|---|---|
| EEric Bransby WilliamsJohn Strong | John Strong |
| LLilian DouglasMarjorie Jones | Marjorie Jones |
 Jameson Thomas'Black' Darley | 'Black' Darley |
| DDallas CairnsMr. Bullyer | Mr. Bullyer |